Water cooler lid



FIG. 1 is a top right front perspective view of a water cooler lid showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof; the right side elevational view being a mirror image; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a water cooler lid, as shown and described. 